Tightening Torque Table; Major Bolt Tightening Torque; Basic Engines; Fuel System - Mitsubishi Heavy Industries SL Series Service Manual

2. Tightening torque table

2.1 Major bolt tightening torque

2.1.1

Basic engines

Description
Cylinder head bolt
Rocker cover bolt
Rocker shaft bracket bolt
Rocker arm adjusting nut
Tachometer L joint union nut
Band type hose cramp
Thrust plate
Main bearing cap bolt
Connecting rod cap nut
Flywheel bolt
Crankshaft pulley nut
Rear plate
mounting bolt
2.1.2

Fuel system

Description
Hollow screw
(fuel injection pump)
Delivery valve holder
(fuel injection pump)
Air-bleeding plug
(fuel injection pump)
Nozzle retaining nut
Nozzle holder
Fuel injection pipe nut
Fuel leak-off pipe nut
Sliding sleeve shaft
Torque spring set special nut
Table 2-8 Tightening torque list - Basic engines
Threads
Dia × Pitch
(mm)
M10 × 1.75
M8 × 1.25
M8 × 1.25
M8 × 1.25
M22 × 1.5
-
M8 × 1.25
M10 × 1.25
M9 × 1.0
M12 × 1.25
M18 × 1.5
For gen-
M12 × 1.25
eral use
For
M12 × 1.25
tractor
Table 2-9 Tightening torque list - Fuel system
Threads
Dia × Pitch
(mm)
M12 × 1.25
M14 × 1.5
-
M8 × 1.25
M16 × 0.75
M20 × 1.5
M12 × 1.5
M12 × 1.5
M10 × 1.25
M12 × 1.0
Torque
N·m kgf·m
83.4 to 93.2 8.5 to 9.5
9.81 to 12.7 1.0 to 1.3
9.81 to 19.6 1.0 to 2.0
18.0 to 22.0 1.8 to 2.2
16.7 to 22.6 1.7 to 2.3
2.9 to 3.4 0.3 to 0.35
9.8 to 11.8 1.0 to 1.2
49.0 to 53.9 5.0 to 5.5
32.4 to 37.3 3.3 to 3.8
127 to 137 13.0 to 14.0
147 to 196 15.0 to 20.0
53.9 to 73.5 5.5 to 7.5
83.4 to 103 8.5 to 10.5
Torque
N·m kgf·m
14.7 to 19.6 1.5 to 2.0
19.6 to 24.5 2.0 to 2.5
39.2 to 49.0 4.0 to 5.0
9.81 to 13.7 1.0 to 1.4
34.3 to 39.2 3.5 to 4.0
49.0 to 58.8 5.0 to 6.0
24.5 to 34.3 2.5 to 3.5
20.6 to 24.5 2.1 to 2.5
29.4 to 41.2 3.0 to 4.2
14.7 to 24.5 1.5 to 2.5
SERVICE DATA
Remark
lbf·ft
61.5 to 68.7
7.2 to 9.4
7.2 to 14.5
13.0 to 15.9
12.3 to 16.6
2.2 to 2.5
7.2 to 8.7
36.2 to 39.8
23.9 to 27.5
94.0 to 101.3
108.5 to 144.6
Equivalent to
39.8 to 54.2
7T
61.5 to 75.9
Remark
lbf·ft
10.8 to 14.5
14.5 to 18.1
28.9 to 36.1
7.2 to 10.1
25.3 to 28.9
36.2 to 43.4
18.1 to 25.3
15.2 to 18.1
21.7 to 30.4
10.8 to 18.1
2-7